The one that gets her laid, obviously

Heather looked back at John over her shoulder. She took a steadying breath before saying, "I would like to apologise for my behaviour. If you'd like to punish me I'll accept it"

John smiled, resting his hands on her shoulders. "I'm so glad you see it that way. Now, the first thing I want you to do is strip down to your undies. If you're going to act like a naughty little girl, you might as well look like one"

"Eyes to the front!" he snapped as she began unzipping her bomber jacket, "No peeking. This is for my enjoyment, not yours"

John watched as heather slid out of her clothes. He grabbed a couple rubber bands from a drawer as she did, and noted with approval that she didn't turn to look at the unfamiliar noise. She finished and stood, hands by her sides, wearing nothing but a loose pair of boxers and her socks. John smiled as he ran his hands over her naked back. He took off her hair tie, replacing the single ponytail with a pair of pigtails.

"There," he said, "Now you look as mature as you act. Turn around"

Heather did, ghasping as she saw he'd taken his shirt off. John grinned at her. "Since you've followed instructions so well, you get a reward. You can play with my chest, but you only get to use your mouth"

Heather leaned in, inhaling deeply as she ran her lips over his chest. She looked up at him questioningly as she first kissed, then licked, then suckled on one of his nipples. "Do you like that?" she asked uncertainly.

"It's your reward," he said, "just go easy on the teeth. I'll let you know if I don't like something"

Emboldened, Heather ran her face along his chest, inhaling all the while. "God, you're so hot..."

"Oh, I like that" John said, grabbing and squeezing one of her buttocks, "Tell me more how hot I am"

"You're so hot!" Heather cried, running her tongue across his chest and following the line back with kisses. "I can't believe I get to- mMm!"

John siezed both of heather's lower cheeks and thrust one leg out, pulling her forward so she was riding his thigh. He rocked her against him with a steady rhythm, sliding her hot, hot pussy against his thigh. "Bet you're glad you decided to take your punishment like a real woman" he said, giving her ass a slap.

"Oh, yes mister!" she cried, her licks and sucks on his chest becoming frantic, "thank you for punishing me like I deserve!"

John did a double-take at being called 'mister', but he didn't say anything - maybe calling a man 'sir' was like calling a woman 'dame' here? If she wanted to call him mister, then that's what he'd answer to. John kept groping and slapping her bottom as she ground into his thigh, her mouth trying new and interesting things with his chest. It was only when she started giving him a long, rather painful hickey that he decided it was time to switch things up.

John took ahold of the waistband of Heather's boxers and pulled steadily up, eliciting a squeal of protest from her as she rose to her tiptoes.

"I think you've been rewarded enough" he said. "Time for more punishment"